import re

from selenium import webdriver
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from pyquery import PyQuery as pq
import os
import urllib.request

KEYWORD = '模特'
browser = webdriver.PhantomJS()
browser.set_window_size(1400, 900)

#browser = webdriver.Chrome()
wait = WebDriverWait(browser, 10)

def search():
    print('正在搜索')
    try:
        browser.get('https://www.taobao.com')
        input = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#q')))
        submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, '#J_TSearchForm > div.search-button > button')))
        input.send_keys(KEYWORD)
        submit.click()
        total = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.total')))
        get_products()
        return total.text
    except TimeoutException:
        return search()

def next_page(page_number):
    print('正在翻页',page_number)
    try:
        input = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > input')))
        submit = wait.until(EC.element_to_be_clickable((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > div.form > span.btn.J_Submit')))
        input.clear()
        input.send_keys(page_number)
        submit.click()
        wait.until(EC.text_to_be_present_in_element((By.CSS_SELECTOR, '#mainsrp-pager > div > div > div > ul > li.item.active > span'), str(page_number)))
        get_products()
    except TimeoutException:
        next_page(page_number)

def get_products():
    wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '#mainsrp-itemlist .items .item')))
    html = browser.page_source
    doc = pq(html)
    items = doc('#mainsrp-itemlist .items .item').items()
    for item in items:
        product = {
            'image': item.find('.pic .img').attr('data-src'),
            'price': item.find('.price').text(),
            'deal': item.find('.deal-cnt').text(),
            'title': item.find('.title').text(),
            'shop': item.find('.shop').text(),
            'location': item.find('.location').text()
        }
        print(product)
        _download_image(product['image'], KEYWORD)

def _download_image(url, folder):
    if not os.path.isdir(folder):
        os.mkdir(folder)
    url = 'http:'+url
    print('downloading %s' % url)
    _filename = lambda s: os.path.join(folder, os.path.split(url)[1])
    urllib.request.urlretrieve(url, _filename(url))
    return _filename(url)

def main():
    try:
        total = search()
        total = int(re.compile('(\d+)').search(total).group(1))
        for i in range(2, total + 1):
            next_page(i)
    except Exception:
        print('出错了')
    finally:
        browser.close()

if __name__ == '__main__':
    main()